Clayton Auto Service

Clayton Auto Service at 4746 Clayton Rd, Concord, CA 94521 offers auto repair and on-site emissions testing, including smog checks. The shop operates with long weekday hours and weekend availability. Test types include OBD-II plug-in checks and tailpipe testing as part of their emissions service. Walk-ins are common, with reviews highlighting fast, affordable service and honest pricing. Accepted payment methods are cash and cards. The shop emphasizes clear communication and reliable turnarounds, making it a practical choice for DMV smog certifications alongside repairs.

Auto repair shop

Test and Repair

Concord, CA

Contact

Address 4746 Clayton Rd, Concord, CA 94521, United States

Phone +1 925-686-1000

Website http://www.claytonautoservice.com/

Hours

Monday 8:30 am–6:30 pm

Tuesday 8:30 am–7 pm

Wednesday 8:30 am–7 pm

Thursday 8:30 am–7 pm

Friday 8:30 am–7 pm

Saturday 8:30 am–7 pm

Sunday Closed

Services

Station Type Test and Repair

Test Types

OBD-II Tailpipe

Vehicles Served

Passenger Cars Commercial Hybrids

Languages English

Practical Information

Appointments Contact for details

Typical Wait 15-30 minutes

Pricing Contact for pricing

Payment

Cash Credit Card Debit Card

Rating

4.4 / 5

Based on 205 reviews

4.2 / 5

Smog Check rating (30 reviews)

Location

Concord, California

More stations in Concord

What Customers Say

Fast Service Friendly Staff Knowledgeable Easy Process Clean Facility Good Communication

Speed: Fast

Pass Rate

Standard

Based on customer review sentiment

Making the Most of Your Visit to Clayton Auto Service

Choosing the right smog check station in Concord, California can save you time, reduce stress, and help ensure your vehicle passes its inspection on the first try. Clayton Auto Service is one of the licensed smog check locations in the area, and preparing properly before your visit can make the process smoother.

Understanding California Smog Check Requirements

Smog Check rules in California vary by vehicle type, registration ZIP code, and model year. Since requirements can differ even within Concord, confirm what applies to you before heading to Clayton Auto Service. Our California Smog Check guide outlines current rules, exemptions, and testing intervals.

Before Your Smog Check

To help make your smog check quick and successful, consider preparing the following:

Confirm your registration address requires testing.
Ensure your check engine light is off and no recent codes have been cleared.
Warm up your vehicle by driving 10 to 15 minutes before testing.
Bring your registration or renewal notice and a valid photo ID.

Why Reviews Matter

Customer experiences can vary, so reading feedback from other drivers can help you understand what to expect. Clayton Auto Service currently has 205 reviews with a 4.4 out of 5 rating, which can provide insights into service quality, wait times, and professionalism.

Visit Checklist

1

Verify Certification

Ensure Clayton Auto Service is an active, licensed smog check station in California.
2

Check Reviews

Read recent customer feedback from other Concord drivers to understand typical wait times and service quality.
3

Confirm Services

Call ahead to confirm the types of tests offered and whether appointments are required.
4

Bring Required Documents

Have your registration or renewal notice, ID, and any required paperwork ready when visiting the station.
5

Ask About Retest Policies

Some stations offer discounted or free retests if your vehicle fails. Ask for details up front.

* This guide is for informational purposes only. Always confirm smog check requirements and policies with your local California authorities.

FAQ

Common questions

Have a question not covered here? Contact us and we will respond within one business day.

Where is Clayton Auto Service located?

Clayton Auto Service is located at 4746 Clayton Rd, Concord, CA 94521, United States in Concord, California.

What services does Clayton Auto Service offer?

Clayton Auto Service is categorized as a Auto repair shop and operates as a Test and Repair station offering OBD-II, Tailpipe testing for passenger cars, commercial, hybrids.

Does Clayton Auto Service provide Smog Check?

Yes, Clayton Auto Service provides Smog Check in Concord, CA. Available test types include OBD-II, Tailpipe.

What are the hours for Clayton Auto Service?

Clayton Auto Service is open: Monday 8:30 am–6:30 pm, Tuesday 8:30 am–7 pm, Wednesday 8:30 am–7 pm, Thursday 8:30 am–7 pm, Friday 8:30 am–7 pm, Saturday 8:30 am–7 pm, Sunday Closed.

How can I contact Clayton Auto Service?

You can reach Clayton Auto Service by phone at +1 925-686-1000, online at http://www.claytonautoservice.com/, or by visiting 4746 Clayton Rd, Concord, CA 94521, United States.

How long does Smog Check take at Clayton Auto Service?

Typical wait time at Clayton Auto Service is 15-30 minutes. Customers generally describe the service speed as Fast.

What payment methods does Clayton Auto Service accept?